The scientists drilled out cores of ice covering a briny Antarctic lake, finding abundant and diverse metabolically active bacteria in an environment that has been isolated from the surface environment — and external sources of energy — for at least 2,800 years, according to two of the report’s authors, Peter Doran and Fabien Kenig.

Lake Vida, the largest of several unique lakes found in the McMurdo Dry Valleys, contains no oxygen, is mostly frozen and possesses the highest nitrous oxide levels of any natural water body on Earth. A briny liquid that is approximately six times saltier than seawater percolates throughout the icy environment that has an average temperature of minus 13.5 degrees centigrade (or 8 degrees Fahrenheit). Continue reading →

TURNBERRY, Scotland (AP) — As Inbee Park hunted down Jin-Young Ko in the final stretch of the Women's British Open, it quickly became clear which South Korean was the rookie and which was the player about to add another chapter in golf's record book.

The issue of drivers' fitness to get behind the wheel with potentially dangerous medical conditions surfaces intermittently. Usually, it happens in the wake of a tragedy that calls into question the means of navigating the fine line between privilege and responsibility. In Colorado, that responsibility rests largely with the individual.